Features： -Measures various parameters: power (W), energy (kWh), volts, amps, hertz, power factor and maximum power (W), time, days - kWh is vital as this is what your electricity bills are based on! -Large, clear LCD display for easy reading (screen dimension: 45mm x 70mm)...

The model of is DM55-1 designed for measuring the AC voltage by connecting to the switch plug directly or the other kind of switch plug. It is suitable for measuring the AC voltage in many place, such as office, factory, laboratory, household and so on...